Formula of acetate starch and preparation technique thereof

Abstract

The invention relates to an acetate starch formulation for textile sizing material, and a preparation method thereof. The acetate starch formulation comprises corn starch, caustic soda, oxidizer, reducer, and esterifying reagent, and is characterized in that the acetate starch formulation also comprises alcohol. The preparation method comprises the following steps: adding the corn starch, causticsoda and alcohol into a feed box, and stirring; sprinkling liquid oxidizer, sprinkling powdery reducer in dispersed manner, spraying with liquid esterifying reagent, heating with steam, evacuating, heating with steam to 65 DEG C, and persistently evacuating until the alcohol in the feed box is completely volatilized, distilled and recovered; and discharging, sieving, pulverizing and mixing. The alcohol solvent phase is employed to prepare acetate starch to reduce the production cost. The acetate starch replaces PVA in textile pulp application to acquire good effect, higher substitution degree, and excellent size film performance, and improve the sizing quality and level of subsequent textile sizing. The alcohol solvent phase production does not require water resource to have no waste water treatment.

Description

(1) Technical field [0001] The invention relates to a formula for auxiliary materials in the textile industry and a preparation method thereof, in particular to a formula and a preparation process for acetate starch, a textile sizing material. (2) Background technology [0002] Acetate starch, also known as acetyl starch, is prepared by esterification of natural starch as a matrix with chemical reagents such as chloroacetyl, acetic anhydride, or vinyl acetate. It is a starch derivative and belongs to the second generation of modified starch. Acetate starch has a history of more than 100 years since its inception. For more than 100 years, acetate starch has been widely used in food industry, adhesive industry, paper industry and other fields. [0003] The application of acetate starch in the textile industry began in the 1970s abroad, but it has only been applied in my country for nearly two decades. It is mainly used for sizing polyester / cotton blended yarn and fine cotto...

AI Technical Summary

Problems solved by technology

Generally, the DS value of starch is low, and the production efficiency of products with a higher degree of substitution is low, and even the aqueous phase wet method is not feasible at all.

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